Chrissie Wellington

There aren’t enough superlatives to describe Wellington, who is undefeated at the iron distance and who holds the world record at an Ironman event (8:36:13), an iron distance event (8:19:13), and the Ironman World Championship (8:54:02). Watch out boys. Photo: Rich Cruse

Liz Hichens is the Web Producer of Triathlete.com. She is an Ironman and marathon finisher and fan of all endurance sports.